"This is a bibliography on foliations, which attempts to be a reasonably complete list
of papers and preprints on the subject of foliations up to 1995.
It contains approximately 2500 titles.
I have not attempted to update it beyond that date (Philippe Tondeur)."

From the Appendix to the book "Foliations on Riemannian Manifolds" by Philippe Tondeur.
Thanks to Philippe for making this excellent resource available!